rule win_quickheal_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-03-28"
        version = "1"
        description = "Detects win.quickheal."
        info = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.6.0"
        signator_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.quickheal"
        malpedia_rule_date = "20230328"
        malpedia_hash = "9d2d75cef573c1c2d861f5197df8f563b05a305d"
        malpedia_version = "20230407"
        malpedia_license = "CC BY-SA 4.0"
        malpedia_sharing = "TLP:WHITE"

    /* DISCLAIMER
     * The strings used in this rule have been automatically selected from the
     * disassembly of memory dumps and unpacked files, using YARA-Signator.
     * The code and documentation is published here:
     * https://github.com/fxb-cocacoding/yara-signator
     * As Malpedia is used as data source, please note that for a given
     * number of families, only single samples are documented.
     * This likely impacts the degree of generalization these rules will offer.
     * Take the described generation method also into consideration when you
     * apply the rules in your use cases and assign them confidence levels.
     */


    strings:
        $sequence_0 = { 8bcd e8???????? 85c0 0f84af050000 8d9424b40d0000 }
            // n = 5, score = 100
            //   8bcd                 | mov                 ecx, ebp
            //   e8????????           |                     
            //   85c0                 | test                eax, eax
            //   0f84af050000         | je                  0x5b5
            //   8d9424b40d0000       | lea                 edx, [esp + 0xdb4]

        $sequence_1 = { 8d74247c f2ae f7d1 49 8bfa c1e707 8bc1 }
            // n = 7, score = 100
            //   8d74247c             | lea                 esi, [esp + 0x7c]
            //   f2ae                 | repne scasb         al, byte ptr es:[edi]
            //   f7d1                 | not                 ecx
            //   49                   | dec                 ecx
            //   8bfa                 | mov                 edi, edx
            //   c1e707               | shl                 edi, 7
            //   8bc1                 | mov                 eax, ecx

        $sequence_2 = { 50 e8???????? 8bd8 c1ef10 c1e302 57 }
            // n = 6, score = 100
            //   50                   | push                eax
            //   e8????????           |                     
            //   8bd8                 | mov                 ebx, eax
            //   c1ef10               | shr                 edi, 0x10
            //   c1e302               | shl                 ebx, 2
            //   57                   | push                edi

        $sequence_3 = { f3ab 83c404 66ab 8b4c240c 8d442414 50 }
            // n = 6, score = 100
            //   f3ab                 | rep stosd           dword ptr es:[edi], eax
            //   83c404               | add                 esp, 4
            //   66ab                 | stosw               word ptr es:[edi], ax
            //   8b4c240c             | mov                 ecx, dword ptr [esp + 0xc]
            //   8d442414             | lea                 eax, [esp + 0x14]
            //   50                   | push                eax

        $sequence_4 = { 8bd6 c1ea1d c1e603 0bd6 8bf1 0bf2 23ea }
            // n = 7, score = 100
            //   8bd6                 | mov                 edx, esi
            //   c1ea1d               | shr                 edx, 0x1d
            //   c1e603               | shl                 esi, 3
            //   0bd6                 | or                  edx, esi
            //   8bf1                 | mov                 esi, ecx
            //   0bf2                 | or                  esi, edx
            //   23ea                 | and                 ebp, edx

        $sequence_5 = { be???????? 8d7c2420 8bd0 f3a5 c1ea02 83e23f }
            // n = 6, score = 100
            //   be????????           |                     
            //   8d7c2420             | lea                 edi, [esp + 0x20]
            //   8bd0                 | mov                 edx, eax
            //   f3a5                 | rep movsd           dword ptr es:[edi], dword ptr [esi]
            //   c1ea02               | shr                 edx, 2
            //   83e23f               | and                 edx, 0x3f

        $sequence_6 = { eb33 8d542410 6a10 52 8bce 66c744241c0003 e8???????? }
            // n = 7, score = 100
            //   eb33                 | jmp                 0x35
            //   8d542410             | lea                 edx, [esp + 0x10]
            //   6a10                 | push                0x10
            //   52                   | push                edx
            //   8bce                 | mov                 ecx, esi
            //   66c744241c0003       | mov                 word ptr [esp + 0x1c], 0x300
            //   e8????????           |                     

        $sequence_7 = { 8d4c241c 68a3090000 51 e8???????? 8bf0 83c41c }
            // n = 6, score = 100
            //   8d4c241c             | lea                 ecx, [esp + 0x1c]
            //   68a3090000           | push                0x9a3
            //   51                   | push                ecx
            //   e8????????           |                     
            //   8bf0                 | mov                 esi, eax
            //   83c41c               | add                 esp, 0x1c

        $sequence_8 = { 3b7c2450 729c 53 e8???????? 83c404 8d4c2410 6809380000 }
            // n = 7, score = 100
            //   3b7c2450             | cmp                 edi, dword ptr [esp + 0x50]
            //   729c                 | jb                  0xffffff9e
            //   53                   | push                ebx
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   8d4c2410             | lea                 ecx, [esp + 0x10]
            //   6809380000           | push                0x3809

        $sequence_9 = { 0bcb 8bde 33d8 33d9 8b6c2444 }
            // n = 5, score = 100
            //   0bcb                 | or                  ecx, ebx
            //   8bde                 | mov                 ebx, esi
            //   33d8                 | xor                 ebx, eax
            //   33d9                 | xor                 ebx, ecx
            //   8b6c2444             | mov                 ebp, dword ptr [esp + 0x44]

    condition:
        7 of them and filesize < 553984
}